Appendix C 



Density distributions based on shell length 



Pool 15 of the Upper Mississippi River 



Description 



Page 



Part I. Density distributions for unionid species from Sylvan Slough 

 (RM 485.8), Case-IH (RM 488.6), and Illiniwek (RM 492.4), 

 1994-95. 



Figure C-1 : Amblema pUcata - Threeridge 



Figure C-2 : Megalonaias nen'osa - Washboard 



Figure C-3 : Ouadnda quadnda - Mapleleaf 



Figure C-4 : Quadnda pustulosa - Pimpleback 



Figure C-5 : Leptodea fragdis - Fragile papershell 



Figure C-6 : EUipsaria lineolata - Butterfly 



Figure C-7 : Obliquaria reflexa - Tlireehorn 



Figure C-8 : Tnincdla tnmcata - Deertoe 



Figure C-9 : Tnincdla donacifonnis - Fawnsfoot 



Part II. Densit>' distributions for unionid species at Sylvan Slough 

 (RM 485.8) from 1983, 1985, 1987, and 1994-95. 



Figure C-10 

 Figure C-11 

 Figure C-12 

 Figure C-1 3 

 Figure C-14 

 Figure C-1 5 

 Figure C-1 6 

 Figure C-1 7 

 Figure C-1 8 

 Figure C-19 



Amblema plicata - Threeridge 

 Megalonaias nervosa - Washboard 

 Ouadnda quadnda - Mapleleaf 

 Ouadnda pustulosa - Pimpleback 

 Ouadnda metanevra - Monkeyface 

 Leptodea fragdis - Fragile papershell 

 EUipsaria lineolata - Butterfly 

 Obliquaria reflexa - Threehom 

 Tnincilla tnincata - Deertoe 

 Tnincilla donaciformis - Fawnsfoot 



Part III. 



Density distributions for unionid species at Case-IH (RM 

 488.5) from 1985, 1987, and 1994. 



Figure C-20 

 Figure C-21 

 Figure C-22 

 Figure C-23 

 Figure C-24 

 Figure C-25 

 Figure C-26 

 Figure C-27 

 Figure C-28 



Amblema plicata - Threeridge 

 Megalonaias nervosa - Washboard 

 Quadnda quadnda - Mapleleaf 

 Quadnda pustulosa - Pimpleback 

 Leptodea fragdis - Fragile papershell 

 EUipsaria lineolata - Butterfly 

 Obliquaria reflexa - Threehom 

 Tnincilla truncata - Deertoe 

 Tnincilla donaciformis - FauTisfoot 

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